-Lessons in math (derivatives, integrals, trigonometry, geometry, complex numbers).
-Corrected problems with a step-by-step guide to the solution.
-Display the graph associated with a function
-View complex numbers in the complex plane.
minor improvements
![lofi study mix for homework ~ [lofi hip hop] - beats to chill/study/relax screenshot 5](https://i.ytimg.com/vi/AznRJvAPtwM/mqdefault.jpg)
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://go.getnew.app/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
